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TROUBLESHOOTING & REPAIR
F-28 F-28
LN-9 GMA Wire Feeder
T2 TRANSFORMER TEST (continued)
FIGURE F.3 – “PROTECTION CIRCUIT TROUBLESHOOTING” NAMEPLATE
PROTECTION CIRCUIT
TROUBLESHOOTING NAMEPLATE
TEST PROCEDURE
1. Remove input power to the LN-9 GMA wire
feeder.
2. Using the phillips head screwdriver, remove
the screws holding the left side cover
assembly.
3. Lift the right side cover assembly.
4. Using the phillips head screwdriver, remove
the two screws from the Protection Circuit
Troubleshooting nameplate. Remove the
nameplate as far as the lead length will
allow. See Figure F.3.